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Human IGFBP3 protein (active)

Human IGFBP3 protein (active). GTX00231-pro
Human IGFBP3 protein (active). GTX00231-pro
Human IGFBP3 protein (active). GTX00231-pro

Cat No. GTX00231-pro

Application Functional Assay
Species Human
Package
10 μg ($269)
APPLICATION

Application Note

Insulin-like growth factor-binding protein 3, also known as IGFBP3 is one of six IGF binding proteins (IGFBP1 to IGFBP6) that have highly conserved structures and bind the insulin-like growth factors IGF-1 and IGF-2 with high affinity. Within tissues, IGFBP3 can bind IGF1 and IGF2 released by many cell types, and block their access to the IGF-1 receptor (IGF1R), which is activated by both IGFs. IGFBP3 also interacts with cell-surface proteins, affecting cell signaling from outside the cell or after internalization, and also enters the cell nucleus where it binds to nuclear hormone receptors and other ligands. Besides, Epidermal Growth Factor Receptor (EGFR) has been identified as an interactor of IGFBP3, thus a binding ELISA assay was conducted to detect the interaction of recombinant human IGFBP3 and recombinant human EGFR. Briefly, IGFBP3 were diluted serially in PBS, with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to EGFR-coated microtiter wells and incubated for 2h at 37ºC. Wells were washed with PBST and incubated for 1h with anti-IGFBP3 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37ºC. Finally, add 50 μl stop solution to the wells and read at 450nm immediately. The binding activity of IGFBP3 and EGFR was in a dose dependent manner.

Observed MW

22 kDa.
PROPERTIES

Form

Lyophilized powder

Buffer

Lyophilized from 20 mM Tris (pH 8.0) with 150 mM NaCl, 1 mM EDTA, 1 mM DTT, 0.01% SKL, 5% Trehalose, Proclin300. Reconstitute with 20 mM Tris and 150 mM NaCl (pH 8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

Storage

For short-term storage (1-2 weeks), store at 4ºC. For long-term storage, store at -20ºC or below. After reconstitution, keep as concentrated solution.Avoid freeze-thaw cycles.

Region/Sequence

N-terminal His-Tag; Gly135~Thr277 (NP_000589.2)

Expression System

E. coli

Purity

> 90%

Endotoxin

< 1 EU/μg

Conjugation

Unconjugated

Note

For laboratory use only. Not for any clinical, therapeutic, or diagnostic use in humans or animals. Not for animal or human consumption.
TARGET

Synonyms

insulin like growth factor binding protein 3,BP-53,IBP3

Background

This gene is a member of the insulin-like growth factor binding protein (IGFBP) family and encodes a protein with an IGFBP domain and a thyroglobulin type-I domain. The protein forms a ternary complex with insulin-like growth factor acid-labile subunit (IGFALS) and either insulin-like growth factor (IGF) I or II. In this form, it circulates in the plasma, prolonging the half-life of IGFs and altering their interaction with cell surface receptors. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

Database

Research Area

DATA IMAGES
Human IGFBP3 protein (active). GTX00231-pro

GTX00231-pro Functional Assay Image

Functional ELISA analysis of GTX00231-pro Human IGFBP3 protein (active) which can bind immobilized EGFR protein.

Human IGFBP3 protein (active). GTX00231-pro

GTX00231-pro Image

WB analysis of GTX00231-pro Human IGFBP3 protein (active).

Human IGFBP3 protein (active). GTX00231-pro

GTX00231-pro Image

SDS-PAGE analysis of GTX00231-pro Human IGFBP3 protein (active).

REFERENCE
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REVIEW
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Package List Price ($)
$ 269